Peroxide vulcanization of oil-extended elastomeric ethylene copolymers containing bromine

• US 4,093,583 A
• Filed: 09/29/1976
• Issued: 06/06/1978
• Est. Priority Date: 09/29/1976
• Status: Expired due to Term

• Current Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Original Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Inventors: Apotheker, David
• Primary Examiner(s): Michl, Paul R.
• Application Number:
  US05/728,003
• Time in Patent Office: 615 Days
• Field of Search: 260/33.6 AQ, 526/19, 526/20, 526/43, 526/57
• US Class Current: 524/551
• CPC Class Codes: C08F 255/06 on to ethene-propene-diene terpolymers C08F255/023 takes precedence
• CPC Class Codes: C08K 5/14 Peroxides
• CPC Class Codes: C08K 5/20 Carboxylic acid amides
• CPC Class Codes: C08K 5/29 Compounds containing one or more carbon-to-nitrogen double bonds
• CPC Class Codes: C08L 23/283 Halogenated homo- or copolymers of iso-olefins
• CPC Class Codes: C08L 2666/02 Organic macromolecular compounds, natural resins, waxes or and bituminous materials

Abstract

A peroxide curable composition of an elastomeric unsaturated ethylene/C₃ -C₁₈ α-monoolefin/nonconjugated diene copolymer (EODM) containing at least about 0.1 weight percent allylic bromine, at least 20 phr of a hydrocarbon extending oil, about 1-5 phr (active ingredient) of an organic peroxide curing agent, and an unsaturated peroxide activator.

Claims

1. An elastomeric peroxide vulcanizable copolymer composition of ethylene, at least one C₃ -C₁₈ alpha-monoolefin, and at least one monoreactive nonconjugated diene containing at least about 0.1 weight percent allylically incorporated bromine, at least about 20 phr of a hydrocarbon extending oil, about 1-5 phr (active ingredient) of an organic peroxide and an unsaturated peroxide activator.

2. A composition of claim 1 wherein the alpha-monoolefin is propylene.

3. A composition of claim 1 wherein the nonconjugated diene is 1,4-hexadiene.

4. A composition of claim 1 wherein the nonconjugated diene is ethylidene norbornene.

5. A composition of claim 1 wherein the nonconjugated diene is dicyclopentadiene.

6. A composition of claim 1 wherein the peroxide is 2,5-dimethyl-2-5-di(tert-butylperoxy) hexyne-3, 2,5-dimethyl-2,5-di(tert-butylperoxy) hexane, or di-tert-butyl peroxide.

7. A composition of claim 1 wherein the activator is triallylcyanurate or m-phenylenebis(maleimide).

8. A composition of claim 1 wherein the extending oil is a paraffinic petroleum oil.

9. A composition of claim 2 wherein the copolymer contains 1-6 weight percent allylically incorporated bromine.

10. A composition of claim 9 containing 2-4 phr (active ingredient) of organic peroxide.

11. A composition of claim 2 containing more than 50 phr hydrocarbon extending oil.

12. A composition of claim 2 containing more than about 100 phr hydrocarbon extending oil.

13. A composition of claim 2 containing about 1-5 phr peroxide activator.

14. A composition of claim 11 wherein the copolymer contains about 1-6 weight percent allylically incorporated bromine.